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Unable to delete malware rootkit file causing google redirect

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By poutling
May 19, 2010
  1. A few days ago, I got hijacked by a nasty program called ap manager but with malware bytes and some regedit tinkering I managed to get rid of it, however there is one last file that I can't seem to delete that is causing google to redirect when clicking on certain google search results. I know for a fact that this is a rootkit agent because malwarebytes has identified it as such, but cannot seem to delete it even after reboot. I've tried deleting in safe mode, using unlocker, using moveonboot but I still get the same error of 'cannot read from the source file or disk' or 'a device attached to the system is not functioning'.

    The file in question is C:\WINDOWS\system32\drivers\yplkpzqo.sys

    I'm trying to avoid a windows reinstall so any help would be really appreciated. Logs are attached. Thanks in advance.
     

    Attached Files:

  2. Broni

    Broni Malware Annihilator Posts: 47,984   +271

    Please download ComboFix from Here or Here to your Desktop.

    **Note: In the event you already have Combofix, this is a new version that I need you to download. It is important that it is saved directly to your desktop**
    1. Please, never rename Combofix unless instructed.
    2. Close any open browsers.
    3. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.
      • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before performing a scan. They can interfere with ComboFix or remove some of its embedded files which may cause "unpredictable results".
      • Click on this link to see a list of programs that should be disabled. The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.
      NOTE1. If Combofix asks you to install Recovery Console, please allow it.
      NOTE 2. If Combofix asks you to update the program, always do so.
      • Close any open browsers.
      • WARNING: Combofix will disconnect your machine from the Internet as soon as it starts
      • Please do not attempt to re-connect your machine back to the Internet until Combofix has completely finished.
      • If there is no internet connection after running Combofix, then restart your computer to restore back your connection.
    4. Double click on combofix.exe & follow the prompts.
    5. When finished, it will produce a report for you.
    6. Please post the "C:\ComboFix.txt" along with a new HijackThis log for further review.
    **Note: Do not mouseclick combofix's window while it's running. That may cause it to stall**

    Make sure, you re-enable your security programs, when you're done with Combofix.

    DO NOT make any other changes to your computer (like installing programs, using other cleaning tools, etc.), until it's officially declared clean!!!
     
  3. raybay

    raybay TS Evangelist Posts: 10,716   +6

    It may take one or all of these... I would run scans of these in this order... It will take a long time... all are available as free downloads you can find on filehippo.com and from a Gurgle search
    Avira Antivir free version OR Avast or AVG 9.0, but preferable Avira Antivir
    And
    Microsoft Security Essentials

    Spyware:
    Microsoft Windows Defender
    MalwareBytres... which you have already done... only do it one more time.
    SuperAntispyware

    or the paid SpySweeper.

    Once done immediately run Avira and SuperAntispyware or MalwareBytes (one works One doesn;t) in SAFE MODE

    Nearly always works for our clients.
     
  4. poutling

    poutling TS Rookie Topic Starter

    Hi Broni,

    here are the combofix.txt and the hijackthis log that you requested. Thanks again for the assistance.
     

    Attached Files:

  5. Broni

    Broni Malware Annihilator Posts: 47,984   +271

    How is redirection issue?

    1. Please open Notepad
    • Click Start , then Run
    • Type notepad .exe in the Run Box.

    2. Now copy/paste the entire content of the codebox below into the Notepad window:

    Code:
    File::
    
    Folder::
    
    Driver::
    
    Registry::
    [HKEY_LOCAL_MACHINE\software\microsoft\security center\Monitoring\KasperskyAntiVirus]
    "DisableMonitoring"=-
    
    
    RegLockDel::
    
    

    3. Save the above as CFScript.txt

    4. Then drag the CFScript.txt into ComboFix.exe as depicted in the animation below. This will start ComboFix again.

    [​IMG]


    5. After reboot, (in case it asks to reboot), please post the following reports/logs into your next reply:
    • Combofix.txt
    • A new HijackThis log.
     
  6. poutling

    poutling TS Rookie Topic Starter

    Redirect issue seems to be gone, and the strange file in windows/system32/drivers folder is gone! :)

    Here are the new logs you requested:
     

    Attached Files:

  7. Broni

    Broni Malware Annihilator Posts: 47,984   +271

    Good news :)

    Uninstall Combofix:
    Go Start > Run [Vista users, go Start>"Start search"]
    Type in:
    Combofix /Uninstall
    Note the space between the "Combofix" and the "/Uninstall"
    Click OK (Vista users - press Enter).
    Restart computer.

    ==========================================================================

    1. Download Temp File Cleaner (TFC)
    Double click on TFC.exe to run the program.
    Click on Start button to begin cleaning process.
    TFC will close all running programs, and it may ask you to restart computer.


    2. Go to Kaspersky website and perform an online antivirus scan.

    1. Disable your active antivirus program.
    2. Read through the requirements and privacy statement and click on Accept button.
    3. It will start downloading and installing the scanner and virus definitions. You will be prompted to install an application from Kaspersky. Click Run.
    4. When the downloads have finished, click on Settings.
    5. Make sure these boxes are checked (ticked). If they are not, please tick them and click on the Save button:

    • Spyware, Adware, Dialers, and other potentially dangerous programs
      [*] Archives
      [*] Mail databases
    6. Click on My Computer under Scan.
    7. Once the scan is complete, it will display the results. Click on View Scan Report.
    8. You will see a list of infected items there. Click on Save Report As....
    9. Save this report to a convenient place. Change the Files of type to Text file (.txt) before clicking on the Save button. Then post it here.
     
  8. poutling

    poutling TS Rookie Topic Starter

    Hi Broni,

    Here's the Kaspersky virus scan. I deleted the regtools.vbs.txt on my desktop that's showing on this scan report. I think I'm clear, looking forward to hearing you give me the ok :)
     

    Attached Files:

  9. Broni

    Broni Malware Annihilator Posts: 47,984   +271

    Your computer is clean [​IMG]

    1. We need to reset system restore to prevent your computer from being accidentally reinfected by using some old restore point(s). We'll create fresh, clean restore point.

    Turn off System Restore:

    - Windows XP:
    1. Click Start.
    2. Right-click the My Computer icon, and then click Properties.
    3. Click the System Restore tab.
    4. Check "Turn off System Restore".
    5. Click Apply.
    6. When turning off System Restore, the existing restore points will be deleted. Click Yes to do this.
    7. Click OK.
    - Windows Vista and 7:
    1. Click Start.
    2. Right-click the Computer icon, and then click Properties.
    3. Click on System Protection under the Tasks column on the left side
    4. Click on Continue on the "User Account Control" window that pops up
    5. Under the System Protection tab, find Available Disks
    6. Uncheck the box for any drive you wish to disable system restore on (in most cases, drive "C:")
    7. When turning off System Restore, the existing restore points will be deleted. Click "Turn System Restore Off" on the popup window to do this.
    8. Click OK

    2. Restart computer.

    3. Turn System Restore on.

    4. Make sure, Windows Updates are current.

    5. If any Trojan was listed among your infection(s), make sure, you change all of your on-line important passwords (bank account(s), secured web sites, etc.) immediately!

    6. Download, and install WOT (Web OF Trust): http://www.mywot.com/. It'll warn you (in most cases) about dangerous web sites.

    7. Run defrag at your convenience.

    8. Read How did I get infected?, With steps so it does not happen again!: http://www.bleepingcomputer.com/forums/topic2520.html

    9. Please, let me know, how is your computer doing.
     
  10. poutling

    poutling TS Rookie Topic Starter

    My computer is doing great now, thanks again so much for the help, it was way easier than I thought it would be once I posted the logs here. Keep up the great work! :)
     
  11. Broni

    Broni Malware Annihilator Posts: 47,984   +271

    Way to go!! [​IMG]
    Good luck and stay safe :)
     
     
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